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 Sun UltraSPARC-II front | |
| General information | |
|---|---|
| Launched | 1997 |
| Discontinued | 2004 |
| Designed by | Sun Microsystems |
| Performance | |
| Max. CPU clock rate | 250 MHz to 650 MHz |
| Architecture and classification | |
| Instruction set | SPARC V9 |
| Physical specifications | |
| Cores |
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| History | |
| Predecessor | UltraSPARC |
| Successor | UltraSPARC III |
The UltraSPARC II, code-named "Blackbird", is a microprocessor implementation of the SPARC V9 instruction set architecture (ISA) developed by Sun Microsystems. Marc Tremblay was the chief architect. Introduced in 1997, it was further development of the UltraSPARC operating at higher clock frequencies of 250 MHz, eventually reaching 650 MHz.
The die contained 5.4 million transistors and had an area of 149 mm2. It was fabricated by Texas Instruments in their 0.35 μm process, dissipated 25 W at 205 MHz, and used a 2.5 V power supply. L2 cache capacity was 1 to 4 MB.
In 1999, the UltraSPARC II was ported to a 0.25 μm process. This version was code-named "Sapphire-Black". It operated at 360 to 480 MHz, possessed a die area of 126 mm2, dissipated 21 W at 400 MHz and the power supply voltage was reduced to 1.9 V. Supported L2 cache capacity was increased to 1 to 8 MB.